Rotary motor.



T. RUHLMANN. ROTARY MOTOR. APPLICATION FILED APB. 19,l 1912.

T. RUHLMANN.

ROTARY MOTOR. APPLIOATION FILED 11211.19, 1912.

Ptented 11101.11, 1913.

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T. RUHLMANN.

ROTARY MOTOR.

APPLICATION FILED APR. 19, 1912.,

Patented Nov. 11, 1913.

4 SHEETS-SHEET 3. v

ATTORNEY T. RUHLMANN.

ROTARY MOTOR.

APPLICATION FILED APB. 19, 1,912.

Patented Nov. 11, 1913.

4 SHEETS-SHEET 4.

TNESSES UNITED sTATEs PATENT oEEioE.

THEODOR'RUHLMANN, or NEW YoRK, N. Y.

ROTARY MOTOR.

vTo all whom @'25 may concern cation.

rIhe present invention relates to rotary motors and has for. its object to provide a construction whereby'the efficiency of the motor will be greatly increased.

The motor, according to this invention, may with slight modifcationsbe used asl an explosion motor, steam or hot air engine.

'lhe principle on which my construction is based is that the motor is divided in two or more compartments, each containing revolving pistons and of which one. compartment serves for the compression of the driving medium, a second one as the explosion compartment, if the motor is used as an explosion motor. or'as an expansion compartment if the motor is used as steam or hot air engine. In Athe case of explosionmotors, I provide three compartments, the third compartment serving as the power compartment. v

To make my invention more clear, the same is illustrated in the accompanying drawings which form part of this specification and in which similar reference characters denote corresponding parts, Figure 1 being a side elevation of the motor; Fig. 2 a partial longitudinal section thereof through line 2 2 of Fig.y 3; Fig. 3 a cross section; Figs. 4L and 5 enlarged partial cross sections similar to Fig. 3 illustrating some details of construction; and Figs. 6 and 7 are respectively a longitudinal section and an end View of the cylinder showing other details of construction.

In the drawings I have illustrated as an example an explosion motor, and 'it will be seen that the same construction, withslight modifications, may be used for steam orhot air engines.

In the drawings 1 denotes a sectional tubular casing or cylinder whichis divided into three compartments 2,2,22, of differ-- ent lengths. In each compartment a rotary piston 3, 3, 32 respectively is provided which pistons are all of uniform but smaller diameter than the inner diameter of the cylinder, so that a comparativelyvnarrow ann nular space 4. for thel driving medium is Specification of Letters Patent.

. Patented Nov. 11,1913.

Applicationmeanprn19, 1912. lserial No. 691,979.

the pistons and 4the inner circumference of the cylinder. All three pistons, are fixed to a power shaft 5 which extends longitudinally through the cylinder and is supported in ball bearings 6 provided in the end covers 7 of the cylinder. For the partition of the cylinder int-o different compartments, -circular, disks 8 are provided which, too, are fixed to the power shaft and which rotatively engage circular grooves -9 provided in the inner circumference of the cylinder. These disks are adapted to tightly close the different compartments from one another and to this end their lateral surfaces are provided with packing rings 10. The outer end openings of the compartments 2 and 22 are tightly closed in a similar manner by disks 11 having packing rings 11. Each of the pistons 3, 3', and 32 consists of a hollow cylindrical body which on its outer circumference is provided with diametrically op posed longitudinal recesses or slots 12. Slid- In the interior the hollowpistons are reinforced by longitudinal ribs 14 arranged opposite the recessed portions and in these ribs the recesses are extended so thatthe power transmitting members of the pistons which normally are adapted to project toward and bear against the inner circumference of' the cylinder, may at certain periods, be allowed of being retracted so that their outer edges are even with the circumference of the piston. The inner edges of the said power transmitting members are secured to pins or short rods 15 which are slidably fitted in tight bushings 16 and at their free ends are formed with head pieces 17 carrying lateral pins 18. These pins are er1- gaged by bifurcated levers 19 fixed to longitudinal spindles 2O which extend throughformed bet-Ween theouter circumference of openings of the different compartments are denoted by the same reference characters distinguished only by different apostrophic characters corresponding to those of the .reference characters of the compartments. In the compartment 1 (Fig. 3) the diametrically opposed openings 21 and 24 serve as admission openings and have fuel supply pipes 25, 26 oined thereto. The opening 23 of the compartment 1 is connected by a pipe 27 to the opening 24 of the compartment 2 and the o osite o enind 22 of the said com art. PP P s P ment 2 is connect-ed by a pipe 28 to the opening 212 of the compartment 22. The opposite opening 232 of compartment 22 serves as discharge. The opening 22 of the compartment 2 is connected by a pipe 27 to the opening 21 of the compartment 2 and the opposite opening 23 of ther said compartment 2 is connected by a pipe 28 to the opening 242 of the compartment 22. The opposite opening 222 of the compartment 22 serves also as discharge. Thus the three compartments are able to communicate with one another through two sets of pipes.

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In each compartment midway between two superposed openings on both sides of the cylinder are arranged inwardly projecting partitions 29, 30 which are of prismatic cross section and which are adapted with their inner edges to tightly bear against the circumference of the respective pistons The power transmitting members 13 are adapted immediately onV approaching the partitions 29 and 30 to be retracted which is accomplished by means of a cam 31 arranged centrally at one end of the cylinder and fixed thereto. The outer ends of the spindles 20 have fixed thereto roller carry-l 32 will be operated by the stationary cam 31 and in consequence thereof the bifurcated levers 19 will retract the members 13 at the predetermined periods. On bein released from the cam portions of the disk 31 the levers will be thrust into normal position by force of the springs The members 13 of all three compartments will work synchronously. p sure of the partitions 29 and 30 against the rotary pistons, the partition may be made hollow and be provided with spring actuated packing members 34.

The mode of operation of the motor is as follows: There are the same number of wings or members 13 in each compartment and all the members are arranged at correspending points. The combustion medium is admitted simultaneously through the pipes 25 and 26 and openings 21,24 into the To insure a lasting ti ht clo-v two halves of the compartment 2. We will assume the pistons to revolve in the direction of the arrow X (Fig. 3). In the present example there are four members 13 for each piston. Each time a member 13 passes the openings 21 and 24 it will create a suction action drawing behind it the fuel into the annular space s, until it reaches .the opposite opening 23 or 22. At this time the ynext following member has so far advanced that itwill close the opening 21 or 24 and while it draws behind it fresh fuel it will compress the fuel in front of it forcing it into the smallest intermediate compartment 2 through pipe 27. The compartment 2 in the present example is made about four times smaller than compartment 2 and therefore the fuel will be highly compressed therein. The fuel enters the compartment 2 through opening 24 and by the wing or member 13 in said compartment which corresponds to that shown at the leftin Fig. 3, it is forced to flow through the upper half of space s and pass through the opposite opening 22 and pipe 28 into the third compartment 22. Prior to entering the third compartment ignition takes place by a suitable igniter 35 arrangedin the pipes 28 and the exploded fuel acts in compartment 2 against the above named member and in the largest compartment 22 against the lower member or wing which corresponds to that shown in Fig. 3. In the smallest compartment it will have a counteracting effect on the wing or member, z'. e. it will tend to drive the piston in reverse direction. To recuperate the loss of power occasioned thereby the compartment 22 is made about ve times as large as compartment 2. The comparatively higherpressure in the last named compartment will give the pistons 3, 3 and 32 an impulse in the direction of the arrow (Fig: 3). In a similar manner the vfuel admitted through opening 24 of compartment 2 will operate the pistons. The two operations will counterbalance the action on the power shaft. The exploded fuel admitted through opening 21 will be discharged through opening 232 of compartment 22 and that admitted through opening 24 of compartment 2 will be discharged through opening 222 of compartment 22.

'Before the entire quantity of exploded fuel is discharged the right hand wing or member 13 in compartment 22 corresponding to that 'in Fig. 3 closes the opening 212 of compartment 22 and a quantity of burned fuel will remain in the compartment 2. It is clear that owing to the residual burned fuel the loss of tension of the incoming fresh fuel owing to decreased expansion space will be greatly minimized.

If the motor is used for steam only two compartments are necessary, to wit one for high pressure and a second for expansion.

For hot air thel compression compartment will be Vmade ten times as.A large as-the ex'- pansion compartment.

What I claim and desire to secure by Let-` ters Patent is: f

L In a rotary motor, a c linder divided longitudiall into a plurality ofcompart'- ments of di erent length, in eachvlcompartment a rotary p'iston, forming anannular chamber between itself and the said cylinjoler, all pistons being rigidly`connected, partitions in each compartment dividing the annular chamber thereof into two tightly separated halves, a' plurality. of retractable members for .each piston projecting. through said annular space and bearing tightly..

against the inner circumference of the cylinfv der, one end compartment having anadl.

' mission opening for each half of its annularV der, all pistons being rigidly connected,'par tltions in each .compartment dividing' the' annular chamber thereof` into two tightly separated halves, :a tplurality of retractable members for each piston projecting through saidannular chamber and` bearin against the innercircum-ference. of der, said members inv all compartments being arranged .atcorresponding `points, andI V cam 4controlled. means for periodically operating said members and arranged in each of sai rotary pistons, one end compartment having an admission opening for each half of Aits annular chamber, the other end compartment having a discharge opening for each half of its annular chamber and the lower and theupper halves of the different compartments being alternately connected to communicate withoneanother.

3, In afrotary explosion motor, a cylinder .divided longitudinally intothree compart- 'ch the Vintermediate one is the ments, of w smallest and one of the end compartments the: largest, 'in each compartment a rotary piston l itself and thefcylinder, all pistons being rig- -idly connected, partitions 1n each compartment dividing t e annular chamber lthereof into two ti htly'separated halves, a plurality orming an. annular chamber between of retracta le members for each piston projectingthrough. said annular chamber andV bearingtightly against the inner circumfer-A ence of the cylinder, said members in all .three compartments -bein arranged at cor' responding points, an cam controlled means -for periodically' operating said membersj'and arrangedin each of said rotary istons, the next largest end compartment v aving anadmission opening for each half f of itsv annular chamber, the largest end 'com' )partment having a 'discharge opening for each. half of its annular chamber and all compartments being connected to communicate with one another. l

1 `In testimon v whereof I ax my signature in' presence o two witnesses.

- 1 THEODOR RUI-ILMANN.vv Witnesses: y f .y -JoHN-T. Cmormj.

vMax D. ORDMANN'. 

